Kiln



,risata erica.

ROBERT J. DYnr., or OAKLAND, CALIFORNIA.

= KILN.

Application filed July 11 T o all whofmz't'mag/ 00u-cern.: Be it known that I, ROBERT J. DYER, a citizen of the United States, residing at the city of Oakland, in the county of Alameda and State vof California,` have invented cer tain new and useful improvements in Kilns, of which the following is a specification.

`Thisinvention relates to an improvement in kilns, and more particularly to thattype commonly known as a biscuit kiln. y

The invention has for its principal Object to provide an arrangement of kilns whereby the heat from one kiln is capable of being transferred to another kiln prior tov dischargingthrough vthe stack, whereby one kiln may be dried by the heat of another kiln being fired, or may be additionally heated by the heat from another kiln.-

The invention consists primarily in a plurality of successively communicating kilns discharging into a common stack, and containing a damper arrangement adapted for operation to control the direction of iiow of the heat as it leaves the kiln.

With the above mentioned and other objects in view, the invention consists in the novel construction and combination of parts hereinafter described, illustrated in the accompanying drawings, and set forth in the claim hereto appended, it being understood that various changes in the form', proportion, size and minor details of construction within the scope of the claim may be resorted to without departing from the spirit or sacricing any of the advantages of the invention.

To more fully comprehend the invention, reference is directed to the accompanying drawings, wherein 'o Figure 1 is a vertical sectional view of one of the kilns. Y

Figure 2 is a view in diagrammatic plan of an arrangement of four kilns successively communicating and discharging into a common stack.

Figure 3 is a view indetail of the cellular kiln ioor taken on line S-Sof Figure 4.

Figure 4 is a sectional view taken on line 4-4 of Figure 3, and

Figure 5 is a plan view of the floor top wall, p

Figure 6 is a transverse sectional view of the kiln taken on line 6 6 ofFigure 1, and

. Figure 7 is a similarview taken on line 7--7 of Figure 1. l

Referring more particularly to the several 152i. semi N6. 483,735.

views of the drawingsl wherein like characters of reference designates corresponding paits,.the numeral 1 designates a" common y form of stack about which are arranged one or more'V kilns 2 of any suitabletype, illustrated in Figure 2 as'being .f four in number.

Each of the kilns, which are illustrated asof the biscuit type are circular in plan,

and com-prise the annular side supporting wall 3 connect-ed by an arched dome 4 resting on the upper yedge thereof, the wall and dome affording ,a kiln chamber 5.v rThe wall is provided with a door opening 6, andis formed throughout its periphery 'with the ii'epots. or boxes i', upwardly from each of which kextends a heating flue 8 discharging as at k9l into the` kiln chamber yadjacent the base of the dome 4, as in Figure 1 of the drawings. The wall 3 below said fire-pots or boxes 7 is formed with an annular duct 10 upwardly from which at spacedintervals.v preferably at points between the flues S, extend exhaust heat flues 11 discharging as at 12Ainto the kiln chamber 5 at a point slightly above the planey of the openings 9. The annular duct 10 is provided with an inlet opening 13, the use of which is hereinafter more fully described.

Within each liuc 11 is mounted a suitable damper 14, which dampers are capable of independent operation 'whereby the heat admitted into the kiln chamber 5 through the flues 11 may be directed to enter the chamber at any suitable point orpoints. The ldome 4 is preferably provided with the well known cooling flues 15.

Each kiln is provided with a cellular iioor vconstruction 15 consisting of the top wall 16 formed of any suitable type of apertured members 17 resting on the ported parallel spaced feather walls 18 which -in turn are supported on a. suitable ported wall 19 resting on the side walls 2() of the outlet channels 21 within the base of the kiln. The channels in plan radiate from a common central point, and at their point of radiation communicate with they elbow portion 22 of a stack ilue 23 connecting directly with the stack, and each having a damper 24 therein. 105

A branch flue 25 leads from the stack liue and connects with a succeeding kiln 2 through the inletopeningi13, and within which branch flue is mounted a suitabledamper 26. This arrangement of connecting each kiln directly with the stack through a damper controlled flue 23, and with an adof firing, y articles at a materially lower cost than when -a single kiln discharging directly into the jacent kiln through a damper controlled branch flue 25 enables the heat from the firepots of any kiln to pass from the kiln chamber 5 through the flue 23 to the stack, or if it is desired the same can be conducted through the branch flue into a succeeding kiln, Where it enters through flues 1l into the chamber 5 of said kiln, and then, if desired, may be conducted to the stack or into another kiln, this being accomplished yby the operation ot' the dampers 24; and 26.

It will be apparent that the present arrangement enables the utilization of the heat from one kiln in another, or in aseries of kilns before the same is conveyed to the stack, thereby enabling the heat from one kiln .in operationV to be conducted to any kiln to dry the contents thereof, thus reducing the cost and enabling Vthe manufacture of stack is employed.

It will be observed ,in my present construction that the fire boX fines are formed within the Wall affording a continuous unbroken smooth inner surface for the kiln chamber thereby providing a greater firing space for the material to be fired over kiln constructions now commonly in use employing what are commonly termed bags projecting into the kiln and which provide the fines for the fire boxes.

Having thus described lmy invention,What I claim as neu7 and desire to secure by Letters Patent of the United States isz- A cylindrical kiln comprising a main Wall having a smooth inner surface, a dome supported thereby, said main Wall provided interiorly with a plurality of vertical flues each communicating at its upper end with the interior of the kiln, said Wall being formed interiorly of its base with anannularduct with which the lower ends of alternate flue-s connect, said wall being further provided interiorly with a plurality of firepots opening at the exterior of the Wall and one associated with alternate flues, andan outlet beneath said kiln connecting with said duct. n y

In testimony whereof I have signed my name to this specification` y ROBERT J. DYER.

cfa

Cil 

